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One who, or that which, detects; a detecter. Shak. A deathbed's detector of the heart. Young. Bank-note detector, a publication containing a description of genuine and counterfeit bank notes, designed to enable persons to discriminate between them. -- Detector l. See under Lock.

A bar, connected with a switch, longer than the distance between any two consecutive wheels of a train (45 to 50 feet), laid inside a rail and operated by the wheels so that the switch cannot be thrown until all the train is past the switch.

A self-restoring coherer, as a microphonic detector.

which, detects or brings to light; one who finds out what another attempts to conceal; a detector.

A grapple in wrestling. Milton. Detector lock, a lock containing a contrivance for showing whether it as has been tampered with. -- Lock bay (Canals), the body of water in a lock chamber. -- Lock chamber, the inclosed space between the gates of a canal lock. -- Lock nut. See Check nut, under Check. -- Lock plate, a…

, by night. Watchman beetle (Zoöl.), the European dor. -- Watchman's clock, a watchman's detector in which the apparatus for recording the times of visiting several stations is contained within a single clock. -- Watchman's detector, or Watchman's time detector, an apparatus for recording the time when a watchman vis…